Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, Argentina

Autores
Mieza, María Soledad; Cravero, Walter Ruben; Kovac, Federico Dario; Bargiano, Pablo Gastón
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this work we propose the use of the topographic position index (TPI), which takes into account the local topography for a given neighborhood, to delineate management units (MU) for site-specific systems. This study was performed in the province of La Pampa, in central Argentina, an area with sandy soils where the main limiting condition for crops is soil moisture. Usually, multi-annual yield maps are used for the delineation of MU. However, those are strongly influenced by issues that could be related to un-calibrated data and previous agronomical practices. Thus, there was a need for a methodology based on stable and unbiased parameters. The methodology was developed for a representative 100 ha field. The average size and orientation of the topographic structures were characterized applying the autocorrelation function on the topographic data, which was then used to determine an optimum neighborhood size for the TPI. TPI performed better than the topographic map to characterize the variability of the field. The correlation between yield and TPI was higher (r = 0.74) than that between yield and topography (r = 0.54). The resulting management units were delineated using an unsupervised classification approach on the TPI maps. From the confusion matrices, the overall accuracy was higher for the TPI derived maps than for the topography derived maps (62% against 47%) when compared to a yield map used as reference. We estimate that this methodology could be used for operational applications, the only requirement being topographic data for a given field, since it is simple, the algorithms used are unbiased and it could be performed using free software.
Fil: Mieza, María Soledad. Universidad Nacional de la Pampa. Facultad de Ingeniería; Argentina
Fil: Cravero, Walter Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina
Fil: Kovac, Federico Dario. Universidad Nacional de la Pampa. Facultad de Ingeniería; Argentina
Fil: Bargiano, Pablo Gastón. DM Consultora Agropecuaria S.A.; Argentina
Materia
Argentina
Autocorrelation Function
Management Unit
Precision Farming
Site Specific Management
Topographic Position Index (Tpi)
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/62260

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spelling Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, ArgentinaMieza, María SoledadCravero, Walter RubenKovac, Federico DarioBargiano, Pablo GastónArgentinaAutocorrelation FunctionManagement UnitPrecision FarmingSite Specific ManagementTopographic Position Index (Tpi)https://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1In this work we propose the use of the topographic position index (TPI), which takes into account the local topography for a given neighborhood, to delineate management units (MU) for site-specific systems. This study was performed in the province of La Pampa, in central Argentina, an area with sandy soils where the main limiting condition for crops is soil moisture. Usually, multi-annual yield maps are used for the delineation of MU. However, those are strongly influenced by issues that could be related to un-calibrated data and previous agronomical practices. Thus, there was a need for a methodology based on stable and unbiased parameters. The methodology was developed for a representative 100 ha field. The average size and orientation of the topographic structures were characterized applying the autocorrelation function on the topographic data, which was then used to determine an optimum neighborhood size for the TPI. TPI performed better than the topographic map to characterize the variability of the field. The correlation between yield and TPI was higher (r = 0.74) than that between yield and topography (r = 0.54). The resulting management units were delineated using an unsupervised classification approach on the TPI maps. From the confusion matrices, the overall accuracy was higher for the TPI derived maps than for the topography derived maps (62% against 47%) when compared to a yield map used as reference. We estimate that this methodology could be used for operational applications, the only requirement being topographic data for a given field, since it is simple, the algorithms used are unbiased and it could be performed using free software.Fil: Mieza, María Soledad. Universidad Nacional de la Pampa. Facultad de Ingeniería; ArgentinaFil: Cravero, Walter Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; ArgentinaFil: Kovac, Federico Dario. Universidad Nacional de la Pampa. Facultad de Ingeniería; ArgentinaFil: Bargiano, Pablo Gastón. DM Consultora Agropecuaria S.A.; ArgentinaElsevier2016-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/62260Mieza, María Soledad; Cravero, Walter Ruben; Kovac, Federico Dario; Bargiano, Pablo Gastón; Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, Argentina; Elsevier; Computers and Eletronics in Agriculture; 127; 9-2016; 158-1670168-1699CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0168169916303568info:eu-repo/semantics/altIdentifier/doi/10.1016/j.compag.2016.06.005info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:43:52Zoai:ri.conicet.gov.ar:11336/62260instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:43:53.078CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, Argentina
title Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, Argentina
spellingShingle Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, Argentina
Mieza, María Soledad
Argentina
Autocorrelation Function
Management Unit
Precision Farming
Site Specific Management
Topographic Position Index (Tpi)
title_short Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, Argentina
title_full Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, Argentina
title_fullStr Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, Argentina
title_full_unstemmed Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, Argentina
title_sort Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, Argentina
dc.creator.none.fl_str_mv Mieza, María Soledad
Cravero, Walter Ruben
Kovac, Federico Dario
Bargiano, Pablo Gastón
author Mieza, María Soledad
author_facet Mieza, María Soledad
Cravero, Walter Ruben
Kovac, Federico Dario
Bargiano, Pablo Gastón
author_role author
author2 Cravero, Walter Ruben
Kovac, Federico Dario
Bargiano, Pablo Gastón
author2_role author
author
author
dc.subject.none.fl_str_mv Argentina
Autocorrelation Function
Management Unit
Precision Farming
Site Specific Management
Topographic Position Index (Tpi)
topic Argentina
Autocorrelation Function
Management Unit
Precision Farming
Site Specific Management
Topographic Position Index (Tpi)
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In this work we propose the use of the topographic position index (TPI), which takes into account the local topography for a given neighborhood, to delineate management units (MU) for site-specific systems. This study was performed in the province of La Pampa, in central Argentina, an area with sandy soils where the main limiting condition for crops is soil moisture. Usually, multi-annual yield maps are used for the delineation of MU. However, those are strongly influenced by issues that could be related to un-calibrated data and previous agronomical practices. Thus, there was a need for a methodology based on stable and unbiased parameters. The methodology was developed for a representative 100 ha field. The average size and orientation of the topographic structures were characterized applying the autocorrelation function on the topographic data, which was then used to determine an optimum neighborhood size for the TPI. TPI performed better than the topographic map to characterize the variability of the field. The correlation between yield and TPI was higher (r = 0.74) than that between yield and topography (r = 0.54). The resulting management units were delineated using an unsupervised classification approach on the TPI maps. From the confusion matrices, the overall accuracy was higher for the TPI derived maps than for the topography derived maps (62% against 47%) when compared to a yield map used as reference. We estimate that this methodology could be used for operational applications, the only requirement being topographic data for a given field, since it is simple, the algorithms used are unbiased and it could be performed using free software.
Fil: Mieza, María Soledad. Universidad Nacional de la Pampa. Facultad de Ingeniería; Argentina
Fil: Cravero, Walter Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina
Fil: Kovac, Federico Dario. Universidad Nacional de la Pampa. Facultad de Ingeniería; Argentina
Fil: Bargiano, Pablo Gastón. DM Consultora Agropecuaria S.A.; Argentina
description In this work we propose the use of the topographic position index (TPI), which takes into account the local topography for a given neighborhood, to delineate management units (MU) for site-specific systems. This study was performed in the province of La Pampa, in central Argentina, an area with sandy soils where the main limiting condition for crops is soil moisture. Usually, multi-annual yield maps are used for the delineation of MU. However, those are strongly influenced by issues that could be related to un-calibrated data and previous agronomical practices. Thus, there was a need for a methodology based on stable and unbiased parameters. The methodology was developed for a representative 100 ha field. The average size and orientation of the topographic structures were characterized applying the autocorrelation function on the topographic data, which was then used to determine an optimum neighborhood size for the TPI. TPI performed better than the topographic map to characterize the variability of the field. The correlation between yield and TPI was higher (r = 0.74) than that between yield and topography (r = 0.54). The resulting management units were delineated using an unsupervised classification approach on the TPI maps. From the confusion matrices, the overall accuracy was higher for the TPI derived maps than for the topography derived maps (62% against 47%) when compared to a yield map used as reference. We estimate that this methodology could be used for operational applications, the only requirement being topographic data for a given field, since it is simple, the algorithms used are unbiased and it could be performed using free software.
publishDate 2016
dc.date.none.fl_str_mv 2016-09
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/62260
Mieza, María Soledad; Cravero, Walter Ruben; Kovac, Federico Dario; Bargiano, Pablo Gastón; Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, Argentina; Elsevier; Computers and Eletronics in Agriculture; 127; 9-2016; 158-167
0168-1699
CONICET Digital
CONICET
url http://hdl.handle.net/11336/62260
identifier_str_mv Mieza, María Soledad; Cravero, Walter Ruben; Kovac, Federico Dario; Bargiano, Pablo Gastón; Delineation of site-specific management units for operational applications using the topographic position index in La Pampa, Argentina; Elsevier; Computers and Eletronics in Agriculture; 127; 9-2016; 158-167
0168-1699
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0168169916303568
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.compag.2016.06.005
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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